3 - Lithium alkali metal
Discovered by Johan August Arfwedson in 1817
- Atomic Radius (Å)
Lithium (from Greek:λίθος lithos, "stone") is a chemical element with the symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 1 | 1 in 2s |
6.94 u
Atomic Mass
2.1 Å
Atomic Radius
1615 K
Boiling Point
1.28 Å
Covalent Radius
0.53 g/cm³
Density
59.63
Electron Affinity
0.98
Electronegativity
5.39 eV
First Ionization Energy
453.85 K
Melting Point
2
Number of Shells
1
Electron Valency
3
Atomic Number
2, 1
Electron Shell Occupations
3.58 J/(g K)
Specific Heat
